(select
 (bgp
   (triple ?::?55 |http://www.w3.org/1999/02/22-rdf-syntax-ns#|:first ?::?52)
   (triple ?::?55 |http://www.w3.org/1999/02/22-rdf-syntax-ns#|:rest ?::?54)
   (triple ?::?54 |http://www.w3.org/1999/02/22-rdf-syntax-ns#|:first ?::?53)
   (triple ?::?54 |http://www.w3.org/1999/02/22-rdf-syntax-ns#|:rest
           |http://www.w3.org/1999/02/22-rdf-syntax-ns#|:nil))
 COMMON-LISP:NIL)